[Solver / Docs]: Delete the Rust backend and import SciPy instead for better performance and readability

.github/workflows/publish.yml

@@ -64,19 +64,7 @@ jobs:
         run: uv python install ${{ matrix.python-version }}
 
       - name: Build wheel
-        shell: bash
-        run: |
-          extra_args=()
-          if [[ "${{ runner.os }}" == "Linux" ]]; then
-            extra_args+=(--auditwheel repair)
-          fi
-
-          uv tool run --from "maturin>=1.7,<2" maturin build \
-            --release \
-            --out dist \
-            --interpreter "$(uv python find ${{ matrix.python-version }})" \
-            --compatibility pypi \
-            "${extra_args[@]}"
+        run: uv build --wheel
 
       - name: Smoke-test wheel
         shell: bash
@@ -120,8 +108,7 @@ jobs:
           PY
           python scripts/check_release_metadata.py
           python scripts/check_dist_artifacts.py dist \
-            --require-cpython 3.10 3.11 3.12 3.13 \
-            --require-platform macosx manylinux win
+            --allow-pure-python
           twine check dist/*
 
       - name: Upload checked distributions

.github/workflows/tests.yml

@@ -19,9 +19,6 @@ jobs:
         with:
           persist-credentials: false
 
-      - name: Install Rust tooling
-        run: rustup component add rustfmt clippy
-
       - name: Install uv
         uses: astral-sh/setup-uv@v5
         with:
@@ -33,12 +30,6 @@ jobs:
       - name: Install dependencies
         run: uv sync --all-extras
 
-      - name: Check Rust formatting
-        run: cargo fmt --all -- --check
-
-      - name: Run Rust clippy
-        run: cargo clippy --all-targets --all-features -- -D warnings
-
       - name: Check Python formatting
         run: uv run ruff format --check .
 
@@ -73,18 +64,12 @@ jobs:
       - name: Install dependencies
         run: uv sync --all-extras
 
-      - name: Build extension
-        run: uv run maturin develop
-
       - name: Check release metadata
         run: uv run python scripts/check_release_metadata.py
 
       - name: Run Python tests
         run: uv run pytest -m "not slow" --cov=micromode --cov-report=xml --cov-report=term-missing
 
-      - name: Run Rust tests
-        run: cargo test --no-default-features
-
       - name: Build distributions
         if: matrix.python-version == '3.13'
         run: uv build
@@ -165,15 +150,9 @@ jobs:
       - name: Install dependencies
         run: uv sync --all-extras
 
-      - name: Build extension
-        run: uv run maturin develop
-
       - name: Run Python tests
         run: uv run pytest
 
-      - name: Run Rust tests
-        run: cargo test --no-default-features
-
   test-windows:
     name: Windows portable tests
     needs: lint
@@ -193,15 +172,9 @@ jobs:
       - name: Install dependencies
         run: uv sync --all-extras
 
-      - name: Build extension
-        run: uv run maturin develop
-
       - name: Run Python tests
         run: uv run pytest -m "not slow"
 
-      - name: Run Rust tests
-        run: cargo test --no-default-features
-
       - name: Build distributions
         run: uv build
 

CHANGELOG.md

@@ -19,9 +19,7 @@
 Initial alpha release candidate.
 
 - Added grid-first Python API for rasterized mode solving.
-- Added Rust sparse shift-invert solver backend.
-- Added a portable native Rust sparse eigensolver path with AMD ordering, packed
-  LU solves, adaptive Arnoldi stopping, and no external solver-stack dependency.
+- Added sparse shift-invert solver support.
 - Added 2D cross-section solves and 1D slice solves.
 - Added scalar, diagonal anisotropic, and tensor material grids.
 - Added six-component field reconstruction.